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Win32.HLLW.Gedzac.15
Added to the Dr.Web virus database:
2012-08-19
Virus description added:
2012-09-09
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Classes\regfile\shell\open\command] '' = '%WINDIR%\MSRundll32.exe "%1" %*'
[<HKLM>\SOFTWARE\Classes\exefile\shell\open\command] '' = '%WINDIR%\MSRundll32.exe "%1" %*'
Malicious functions:
To complicate detection of its presence in the operating system,
blocks execution of the following system utilities:
Windows Task Manager (Taskmgr)
Registry Editor (RegEdit)
blocks the following features:
System Restore (SR)
System File Checker (SFC)
Creates and executes the following:
Executes the following:
<SYSTEM32>\net1.exe stop SharedAccess
<SYSTEM32>\net.exe stop SharedAccess
%WINDIR%\regedit.exe /s c:\l.reg
Injects code into
the following system processes:
Terminates or attempts to terminate
the following user processes:
httplook.exe
GUARD.EXE
magent.exe
mpftray.exe
MCAGENT.EXE
fsav.exe
Drwebwcl.exe
fsav32.exe
fsavgui.exe
fsavaui.exe
WebMoney.exe
spidernt.exe
zapro.exe
ZONEALARM.EXE
zlclient.exe
nod.exe
NAVAPW32.EXE
nod32.exe
smc.exe
outpost.exe
AVP.COM
AVGCTRL.EXE
AVP.EXE
AVPCC.EXE
AVP32.EXE
ashAvast.exe
ash.exe
ashAvSrv.exe
AVGCC32.EXE
avgcc.exe
drweb.exe
ClamWin.exe
Drweb32w.exe
Drwebupw.exe
drweb386.exe
AVSYNMGR.EXE
AVPM.EXE
bdagent.exe
ccapp.exe
bdss.exe
Modifies file system :
Creates the following files:
\Device\LanmanRedirector\#$*\MAILSLOT\NET\NETLOGON
%WINDIR%\ymsg\amor_love.zip
%WINDIR%\ymsg\mi poema.zip
\Device\LanmanRedirector\#$%^&*\MAILSLOT\NET\NETLOGON
\Device\LanmanRedirector\#$%^*\MAILSLOT\NET\NETLOGON
\Device\LanmanRedirector\#$%*\MAILSLOT\NET\NETLOGON
%WINDIR%\ymsg\Video.zip
%WINDIR%\Wininit.ini
C:\l.reg
%WINDIR%\MSRundll32.exe
%WINDIR%\ymsg\chicas_girls.zip
%WINDIR%\ymsg\Mi foto.zip
%WINDIR%\Leliel.zip
Network activity:
Connects to:
'<Private IP address>':80
'<Private IP address>':139
'www.fb#.gov':80
'<Private IP address>':445
TCP:
UDP:
Miscellaneous:
Searches for the following windows:
ClassName: 'Shell_TrayWnd' WindowName: ''
ClassName: 'RegEdit_RegEdit' WindowName: ''
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